bind: add test script for interfaces

Change-Id: Iba3902544ebf5e1d0a7846803bcb628518334f7b

_examples/iface/test.py

@@ -0,0 +1,20 @@
+# Copyright 2015 The go-python Authors.  All rights reserved.
+# Use of this source code is governed by a BSD-style
+# license that can be found in the LICENSE file.
+
+## py2/py3 compat
+from __future__ import print_function
+
+import iface
+
+### test docs
+print("doc(iface): %r" % (iface.__doc__,))
+
+print("t = iface.T()")
+t = iface.T()
+print("t.F()")
+t.F()
+
+print("iface.CallIface(t)")
+iface.CallIface(t)
+